Hi, <br />I have a 70 horsepower Johnson outboard. I hit a rock with the leg while trolling at low speed, with the motor trimed out at 20 degrees. Since then the leg will not lift but will lower. The motor is working in both directions, up and down. I have repeatedly drained then refilled and bled the system. All hydraulic lines are in tact. Any thoughts on what the problem could be. Everything was working 100% before I hit the rock. Thanks for any input.<br />gh